[tex]45\:square\:units[/tex]
1) The total surface area of a cube is given by a formula:
[tex]TSA=6s^2[/tex]
2) Since the cube in the picture is made up of 3 squares wide and 3 squares in length we can tell the following:
[tex]TSA=6(3)^2=6\times9=45\:u^2[/tex]
Note that the area of one of those tiny cubes is 1 ft² because:
